Nozzle



March 8, 1932. M, C, SHAW v 1,848,436

NOZZLE Filed May 2, 1950 Patented Mar. 8., 1932 t UNITED STATES PATENTOFFICE MELVIN C. SHAW, OF WEST ALLIS, WISOONSIN, ASSIGNOR TOALLIS-CHALMERS lIlYlLA'N'U- FACTURING- COMPANY, F MILWAUKEE,WISCONSIN',A A CORPORATION OF. DELA- NOZZLE Application led May 2, 1930.Serial No. 449,166.

This invention relates to improvements in nozzle structures, and moreparticularly to nozzles adapted for use in cleaning devices for castingsor the like, in which a stream of cleansing medium, such as Water, isdirected against the article to be cleaned.

An object of the invention is to provide an improved nozzle constructionWhich is simple and compact in structure, and eiiicient in operation.

Another object of the invention is to pro# vide an improved shieldingdevice for facilitating manipulation of a nozzle from the exterior'of acleaning chamber. Anotherobject of the invention is to provide animproved handleadapted for use with the improved shielding device.

Another object of the invention is to provide a nozzle having adischarge member movable in any direction, by means of a curved leverand mount the nozzle at one side of a chamber Wall portion provided withan opening and a shielding device substantially closing said wallopening and extending over a considerable portion of the nozzle saidshielding device having and requiring but a small sized exible membersnugly' engaging and receiving the curved portion of said lever'toeffectively prevent the' escape of the high pressure cleansing fluidthrough said Wall opening as Well as foreign material directed towardsaidopening as a result of impact of the cleansing fluid against the article being cleansed, to the other side of said wall portion from whichthe lever is normally operated.

Further objects and advantages of the invention will be setforth in thedetailed description which follows.

In the accompanying drawings:

Fig. 1 is a side elevation of a nozzle, the

improved shielding device being shown in section. Fig. 2 is a. plan viewof the nozzle shown in Fig. l, the improved shielding device and part ofthe improved handle vbeing shown in section.

Fig. 3 is a fragmentary view showing a par- .tal section on line III-IIIof Fig. l. Fig. 4 is a side elevation of a modified form of nozzle, partof the improvedA shieldingv device being shown in section.

Fig. 5 is a section on line V-V of Fig. 4. In foundry practice it hasrecently become a custom to remove coresand moulding materials whichadhere to castings after they have been taken out of the mould, byshooting a powerful stream of Water against the cores.

Such cleaning process is preferably per-V with the improvement, anoperating lever is vpreferably used to move the nozzle, and a shieldingdevice through which such lever passes, protects the operator frominjury by dbris and Water.

It has heretofore been proposed in carrying out such a cleaning processto provide the Wall of the cleaning chamber with an opening suiiicientlylarge to permit of the necessary ranges of movement of the operatinglever of a universally movable nozzle, the dischargemember of whichpreferably not extending through the Wall, and sealing the opening witha member of leather or canvas and of pyramid form having its basemarginal portions attached'to the Wall material immediately surroundingthe opening and having its inner end attached to the operating leverclose to the nozzle. The necessary freedom of movement for the dischargemember of the nozzle in all directions was provided by lthe flexibilityof the material` This member Was subjected to considerable deteriorationdue to the constant dampness, water generally being used as thecleansing uid because of its relative cheapness. Furthermore the canvasor leather member of pyramid form vdid not provide the operator withcomplete safety in case of the bursting of the nozzle or piping or incaseof leakage from the gaskets. The size of the member and its relativestiffness because made of leather or canvas constituted a drag on thenozzle requiring the expenditure of an unnecessary amount of energy inmoving the nozzle. The size and the arrangement of the leather or canvasmember also seriously interfered with the removal of the nozzle forpurposes of repaclnng or repairing the same.

In order to more completely rotect an operator of such a nozzle frominjury while enhancing the ease of operation thereof by reducing thesize of the iiexible member, this invention contemplates the productionof a turret type of nozzle, utilizable in thel said cleaning process,having a peculiarly curved operating lever movable within the confinesof a rigid metallic shield of box shape, which substantially closes thewall opening, while the discharge member is moved in all direc tionsbysaid lever, said shield surrounding the lever receiving wall opening-andrequiring by reason of the slight orbital movements of the operatinglever in the extended face of said shield a much smaller flexible memberfor completely sealing the wall opening than what was required in theconstruction and arrangement of nozzle heretofore used and as describedabove.

In the drawings, 1 indicates the wall of the cleaning chamber, andl anozzle which is movable in any direction, is preferably located closelyadjacent to the inside of said wall. The nozzle shown in Figs. 1, 2 and3 is of well known design and has a stationary support 2 about which anozzle body 3 is rotatable upon ball bearings 40 and 50. A packing 5 isheld within the nozzle body 3 by a packing gland 6, and seals the jointbe-v tween support 2 and nozzle body 3. Elbows 7 and 8 are connected tothe nozzle body 3 by suitable means, said elbows 7 and y8 constitutingwith said body a tubular'support and admit the water to a nozzle head ordischarge member 9 which is adapted to swing in a vertical plane aroundhorizontal legs of the elbows 7 and 8. Suitable packings held in placeby caps 10 and 11, seal the joints between the nozzle head 9 and theelbows 7 and '8. At its outer end, the nozzle head 9 has head 9 and isprovided outside of the cleaning chamber with a handle 14. The curvedportion of the lever 13 passes through a shield 15` and is bent along anarc concentric with the horizontal pivotal axis of. the nozzle head andywith the horizontal legs of the` elbows 7 and 8. The shield 15 is madeof a suitably rigid material, preferably sheet met-r al, and is firmlyretained upona plate 16 supportedby a frame 17 which is fastened bysuitable means, in an opening of the wall 1 of the cleaning chamber.TheJ shield 15 is so located that its front wall with the hole for thecurved lever 13 is approximately coincident with the vertical axis ofrotation of the nozzle body 3, and the hole itself is so located that itlies substantially on said axis. It will be apparent that thisarrangement permits unobstructed movement of the s curved lever 13, nomatter if the nozzle head 9 is moved in a vertical or a horizontalplane. Moving the handle 14 up and down will cause the nozzle head 9 toswing in a vertical plane with the curved lever 13 traveling through thehole in shield 15. Swinging the handle around in a horizontal plane willcause the nozzle body 3 to travel around its vertical axis and, as thehole in shield 15 lies substan tially on this axis, a wide range oflateral movement will be obtained if the hole in shield 15 is onlyslightly larger than the diameter of lever 13. A'iexible plate 18 fitssnugly over the lever 13 and is fastened by suitable means to the shield15. The plate 18 is preferably made lof soft rubber and will adjustitself to any position of the curved lever, thus sealing at all timesthe space between this lever and the shield. The handle 14 is adjustablyconnected with the lever 13 so that the end thereof which is graped bythe operator, can be adjusted to any consoA venient height. A bolt 19and a nut 2O hold l positions are secured by a stud 21 in one partcooperable with any one of a number of sets of holes in the other.Dierently shaped handles may be employed to secure additional travel ofthe nozzle, if necessary.

A modified form of nozzle construction is shown in Figs. 4 and 5. Astationary nozzle body 22 has on its lower portion a fiange 23 adaptedto be connected with a pipe line or other suitable means, not shown inthe drawings, for supplying the medium to be discharged through thenozzle. The upper part of the nozzle body 22 is fitted with outer races24 and 25 of conical roller bearings, the lower race 25 being supportedby a shoulder 26 on the nozzle body. Another shoulder 27 in the lowerpart of the nozzle body is provided as a packing retainer. indicates aT-s'haped fitting which is rotatably held within the nozzle body 22 byconical rollers 29, and by inner races 30 and 31 cooperating with theouter races 24 and 25. The races 30 and 31 are separated by a spacer 32and are secured against axial displacement by a ring 33 and a shoulder34 on the shank of the fitting 28. The latter, is prevented from axialdisplacement by the in' clined disposition of the rollers 29, theshoulder 26, and by the cover 35 which retains the outer race 24.Attachedto the lateral extentions of the T-shaped fitting 28 are elbows36 and 37 constituting with said fitting a tubular support, the elbows36 and 37 pivotal` ly connecting vthe fitting 28 with a nozzle head ordischarge member 38 which has an orifice portion similar to that shownin Figs. 1 and 2 'at its outer end. The nozzle head 38 is pivoted uponstraight horizontal legs of the elbows 36 and 37 by means of a T- shapedhead, the lateral extensions of which are fitted with packings 39,bushings 47 and caps 41. A packing 5 in the lower part of the nozzlebody 22 seals the joint between this body and the shank of fitting 28. Agland 42 retains the packin s 5 in place, and can be adjusted b v meanso eye-bolts 43 and nuts 44. Upon releasing the eye-bolts 43 fromengagement with the gland .42 the latter may be retracted along thediametrically opposed openings provided in stationary nozzle body 22soyas to expose the packing 5 which then may be removed and replaced withnew packing material without detaching` the nozzle from the supply pipe.The space between the roller bearings may be filled with grease by meansof a grease cup 45 screwed into the wall of the nozzle body 22.

A curved lever 13 which is bent along an arc concentric with thehorizontal nozzle axis and with legs of the elbows 36 and 37, is securedin a socket portion 46 of the nozzle head 38, and passes through ashield 15 in asimilar manner to thatdescribed in connection with thenozzle shown in Figs. l and 2, so that the nozzle head can be moved inany desired direction.

By providing roller bearings to .take up axial -thrust as well aslateral thrust, the packing 5 will be relieved from such lateral thrust,and resistance to manipulation of the nozzle will be greatly reduced.The packing 5 is arranged at such a -place that itprevents the iiuentmedium to be 'discharged by the nozzle, from enteringthe space betweenthe roller bearings. Any leakage fluid passing the packing 5 escapesthrough the opposed openings in the nozzle body 22 rather than to'enterthe bearings located in a path of higher resistance. The opposedopenings in the nozzle body therefore serve the dual function ofpermitting the escape of fluid passing packing 5 `and of providing anavenue of a proach-for retracting the gland 42 preliminary to replacingthe packing 5. This is a highly'desirable feature if the nozzle is to beused in casting washing plants because, in this case the water is usedover and over again and, therefore,

carries considerable grit which would quickly destroy the workingsurfaces -of the roller bearings. l

It should be understood that it is not intended to limit the inventionto the exact details of construction herein shown and described, forvarious modifications within the scope of the claims may occur topersons skilled in the art.

It is claimed and desired to secure by Letters Patent: s v

1. In combination, a wall portion having an opening, a nozzle comprisinga discharge member-and a cooperating tubular support associated withsaid wall. portion, said discharge member being movable in any direc-'tion,`and a curved lever having an adjustable handle attached to saiddischarge member and extending through said wall opening, said leverhaving a curved portion concentric with a center of movement of saiddischarge member.

2. In'combinat-ion, a wall portion having an opening, a shielding devicesubstantially covering said opening and provided with a. relativelysmall opening, a nozzle 'comprising `a discharge member and acooperating tubular support associated with said wall portion,

'said discharge member being movable in any relatively small opening, aflexible ymember covering said latter opening, a nozzle comprising adischarge member and a coo erating tubular support associated with saiwall portion, said discharge member being movable in any direction, anda curved lever attached to said discharge member, said lever having-acurved portion concentric with a center of movement of said dischargemember and extending through said wall opening and passing throughsubstantially a fixed point in the plane of said shielding deviceopening and bein closely engaged andv surf rounded byaid exible memberas the discharge member is moved to its different positions.

4. In combination, a wall portion, a'nozzle located at one side of saidwall portion, said nozzle comprising a stationary body adapted to beconnected to a source of high pressure fluid, a tting rotatablyassociated with said body and a dlscharge member pivotally associatedWithsaidtting, saidA wall portion being provided with an opening, ashield mounted over said opening and having an opening, and a leversecured to said dischargemember and having a substantially arcshapedcurved portion concentric with the center of movement of said dischargemember, for adjusting the position thereof and passing through saidshleld opening, and the f plane of said shield opening beingsubstantially in the axis of rotation of said fitting.

5. In combination, a wall portion, a nozzle located entirely at one sideof said wall portion, said nozzle comprising a stationary body adaptedto be connected to a source of high pressure fluid, a bifurcated memberrotatably associated with said body and a discharge 5 member pivotallyassociated with said bifurcated member, said Wall portion being providedwith an opening, a shield mounted oversaid opening and having arelatively small opening, a flexible member surrounding said shieldopening, and a lever secured to said discharge member and havingasubstantially arc-shaped curved portion concentric with the center ofmovement of said discharge member, for adjusting the position thereofand passing through said shield opening and being closely engaged bysaid flexible member, and the plane of said shield opening beingsubstantially in the aXisof rotation of said bifurcated member.

6. In combination, a Wall portion having an opening, a shielding devicesubstantially covering said opening and provided with a relatively smallopening, a nozzle comprising a discharge member and a cooperating rotat-15 able tubular support, said discharge member being rotatable on saidtubular support on an aXis at an angle to the axis of rotation of saidtubularlsupport, said shield opening being substantially in a planepassing through the axis of said support, and a curved lever 'rigidlyattached to said discharge member, said lever having a curved portionconcentric with a center of movement of said' discharge member andextendingI through said Wall opening and passing through said shieldingdevice opening.

In testimony whereof, the signature of the inventor is aiixed hereto.

40 MELVIN C. SHAW.

